Abbreviated Journal Title
Phys. Rev. A
HARMONIC-GENERATION; LASER; IONIZATION; FIELDS; Optics; Physics, Atomic, Molecular & Chemical
Quasi-phase-matching in a dual gas (Ar-H-2) multijet array has recently been demonstrated to be a promising way to enhance the yield of high-order harmonics (HH). Here, we investigate the HH produced individually from these two gases under identical conditions. Our results indicate that the quasi-phase-matching results from the much lower recombination cross section of H-2 as compared to that of Ar in the energy range of interest, rather than from full ionization of H-2 by the driving laser as proposed previously.
Physical Review A
Wang, Xiaowei; Chini, Michael; Zhang, Qi; Zhao, Kun; Wu, Yi; Telnov, Dmitry A.; Chu, Shih-I; and Chang, Zenghu, "Mechanism of quasi-phase-matching in a dual-gas multijet array" (2012). Faculty Bibliography 2010s. 3462.